[Zope] Help with demoportal

[Owen Smith]

2000-08-04T09:29:53 ERROR(200) Zope Couldn't install DemoPortal
Traceback (innermost last):
  File /usr/local/dc/zope/lib/python/OFS/Application.py, line 464, in
install_products
    (Object: ApplicationDefaultPermissions)
    (Info: DemoPortal)
  File /usr/local/dc/zope/lib/python/App/Product.py, line 425, in
initializeProduct
    (Object: Products.DemoPortal)
  File /usr/local/dc/zope/lib/python/ZODB/ExportImport.py, line 284, in
importFile
SystemError: Failed to import class _ZClass_for_DemoPortalBase from
module Products.PTKDemo

anyone help me with this?

Owen